Can be divided into: single hook slide rails, double hook slide rails.

本类型机可分：单吊钩滑轨、双吊钩滑轨。

youdao

Single hook lifting height is to 25 meter, and double hook is to 12 meter.

单勾提升高度最高可至25米。双钩最高可提升至12米。

youdao

Large single hook lift system in mine has problems in reactive power loss, and energy waste during decentralization.

叙述了矿井单钩提升系统大马拉小车、无功损耗大、下放段能量白白浪费的问题。

youdao

Forgotten, though, is how a single currency lets its member nations off the hook.

FORBES: Digital Rules

Blending seaways with a range of hikes on three of the Whitsunday, islands (Hook, Whitsunday and South Molle), the trail has no single defined route, and is accessible at any point by private, charter or commercial boat.

BBC: Kayaking Australia��s Whitsunday Islands

The youngest of her two sons, suspected gunman Adam Lanza, 20, allegedly shot her in the head multiple times before heading to Sandy Hook Elementary School, where he took his own life with a single bullet, according to Connecticut's chief medical examiner.

WSJ: Portraits of Newtown Victims